Before Xavi was announce he want to withdraw from his current position Xavi has been says that Barcelona is deserved to gets a better manager than him but what Xavi done for Barcelona is really impressive and i still remember when Xavi first time arrived to Barcelona as the replacement of Ronald Koeman at that time Barcelona performance is really messed up moreover at Champion League Barcelona was lost with big scores 8-2 from Bayern Munich besides that Barcelona also lost Messi because they had decide to let Messi moved to PSG so Barcelona conditions at that time is not really good but gradually Xavi has successfully to solved the issues and the result is Barcelona can gets Laliga trophy last season
Xavi indeed feel dissapoint to see Barcelona current performance so that's why he decide to leave but i don't think it's entirely his fault because in the last several season Barcelona has facing financial conditions which makes Xavi unable to bought the players he wants and actually Barcelona still attempts to defending Xavi so that's why although some of names were linked to Barcelona as the candidate for next manager but Barcelona owner has been confirmed they haven't look for new manager this because Barcelona owner feel there is no guarantee new manager can bringing Barcelona to performing well so they still hopes Xavi will change his mind and still being an Barcelona manager for much longer
Xavi has been a good manager at the Spanish side, even though they've had some shaky situations, they've just found a way to cover up lapses and make necessary coverings to the loopholes. It's very much good that they were able to put in good effort regardless of what they lacked to good team building. Nonetheless, Xavi would have still done better than he's already done. Well, his days with the team are technically numbered and he's got some commendations which he definitely deserves.
I don't know what to say about his intended replacement but all I'll say is Barcelona as a team has work to be done and I'd love to see the new Barcelona in seasons and games to come.
It'll be very much important that Barcelona management tried their best to get a good replacement for Xavi and finding the best option for them would be a bit difficult. There are prospect options for them but they've got to be very careful in their choices.
Considering Emery as a choice, he's got an improved record with Villa and normally, Villa and Barcelona's level can't be compared so it's safe to say that it'd be a bit different to manage Barcelona based on their range of players and level in football. Barcelona isn't a team to be taken as an experiment. They won't be able to bear loosing their value and pride just because of them trying to make use of a manager who's not really had very much experience in a big team. Although, EPL is competitive than the La Liga, so maybe there can be a little match in strategy.